S
M
T
W
T
F
S
26
33°
24°
27
43°
23°
28
51°
27°
29
53°
28°
30
57°
29°
1
71°
31°
2
64°
36°
3
71°
36°
4
49°
31°
5
45°
26°
6
66°
24°
7
60°
60°
8
72°
40°
9
62°
42°
10
76°
36°
11
71°
45°
12
73°
38°
13
86°
44°
14
64°
44°
15
62°
43°
16
53°
36°
17
43°
32°
18
45°
30°
19
59°
28°
20
57°
36°
21
54°
38°
22
64°
34°
23
71°
42°
24
78°
40°
25
83°
47°
26
85°
55°
27
85°
53°
28
93°
57°
29
91°
60°
30
72°
52°
31
56°
48°
1
64°
43°
2
70°
45°
3
79°
54°
4
80°
52°
5
83°
53°
6
82°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Square Butte
Square Butte's May 2026 forecast shows daily high temperatures ranging from 56° to 93°, with overnight lows between 43° and 60°. The average high for May is 78° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Square Butte. See also: June | July | August.
